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WO2021017677A1 - 压缩机和空调系统 - Google Patents

压缩机和空调系统 Download PDF

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Publication number
WO2021017677A1
WO2021017677A1 PCT/CN2020/096826 CN2020096826W WO2021017677A1 WO 2021017677 A1 WO2021017677 A1 WO 2021017677A1 CN 2020096826 W CN2020096826 W CN 2020096826W WO 2021017677 A1 WO2021017677 A1 WO 2021017677A1
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WO
WIPO (PCT)
Prior art keywords
air
pressure
air supplement
port
compressor
Prior art date
Application number
PCT/CN2020/096826
Other languages
English (en)
French (fr)
Inventor
卓明胜
曹聪
毕雨时
侯芙蓉
孟强军
Original Assignee
珠海格力电器股份有限公司
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Filing date
Publication date
Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2021017677A1 publication Critical patent/WO2021017677A1/zh
Priority to US17/575,451 priority Critical patent/US20220136507A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps

Definitions

  • the present disclosure is based on the application with the CN application number 201910690146.6 and the filing date on July 29, 2019, and claims its priority.
  • the disclosure of the CN application is hereby incorporated into the present disclosure as a whole.
  • the present disclosure relates to the technical field of air conditioning equipment, in particular to a compressor and an air conditioning system.
  • an air supplement device will be installed on the compressor to increase the cooling capacity and improve the overall energy efficiency.
  • the usual method is to open a supplementary air port on the slide valve, and introduce the increased refrigerant into the rotor compression chamber through the slide valve.
  • the amount of supplemental air is relatively small, generally around 10%.
  • the single-machine two-stage screw compressor adopts the structure of two sets of rotors, and the supplemental air can be set between the first-stage exhaust and the second-stage suction. Due to the large shell space, the supplemental air volume can be increased to more than 20%.
  • the low-pressure stage or the middle housing is provided with a supplementary air port, and the supplementary pressure is difficult to control.
  • the compressor still has technical defects that the air supplement is small and the pressure is difficult to control.
  • the embodiments of the present disclosure provide a compressor and an air conditioning system, which can increase the supplemental air volume and facilitate the control of the supplemental air pressure.
  • a connecting pipeline is provided between the exhaust port of the one-stage compression structure in the two-stage compression structure and the suction port of the other compression structure, the intermediate air supplement structure is directly or indirectly connected with the connecting pipeline, and at least one stage The compression structure is provided with an air supplement structure.
  • the compression structure includes a rotor cavity, the rotor cavity is provided with a rotor cavity air supplement port, and the rotor cavity air supplement port forms an air supplement structure.
  • the compression structure further includes a spool valve.
  • the spool valve is provided with a spool valve cavity supplement port.
  • the spool valve cavity supplement port and the rotor cavity supplement port together form a supplement structure, and the slide valve cavity in the same supplement structure
  • the supplementary air pressure at the supplementary air port is equal to the supplementary air pressure of the rotor cavity supplementary air port.
  • the spool valve is a volume spool valve, and the working state of the spool valve cavity air supplement port and the rotor cavity air supplement port are the same.
  • the spool valve is an internal volume ratio adjustment spool valve, and the spool valve cavity air supply port and the rotor cavity air supply port work relatively independently.
  • a plurality of communicating holes are provided on the circumferential side of the rotor cavity, and all communicating holes are arranged along the spiral direction of the rotor in the rotor cavity.
  • the two-stage compression structure includes a low-pressure stage body and a high-pressure stage body.
  • the low-pressure stage body is provided with a low-pressure stage air supplement structure
  • the high-pressure stage body is provided with a high-pressure stage air supplement structure
  • the suction of the low-pressure stage body The pressure is lower than the supplementary pressure of the low-pressure stage supplementary structure and the supplementary pressure of the intermediate supplementary structure is smaller than the suction pressure of the high-pressure stage body and less than the supplementary pressure of the high-pressure stage supplementary structure.
  • the low-pressure stage body includes an exhaust cavity, the exhaust cavity is provided with a low-pressure exhaust port, the intermediate air supplement structure is in communication with the exhaust cavity, and the air outlet direction of the intermediate air supplement pipeline points to the low pressure exhaust port.
  • the compressor further includes a detection module that detects and adjusts the supplemental air pressure of the supplemental air structure.
  • the compressor further includes a detection module that detects and adjusts the supplementary air pressure of the intermediate supplementary air pipeline.
  • the compressor further includes a detection module that detects and adjusts the supplementary air pressure of the supplemental air structure and the supplementary air pressure of the intermediate supplementary air pipeline.
  • the capacity of the two-stage compression structure is equal.
  • Some embodiments of the present disclosure provide an air conditioning system including the aforementioned compressor.
  • an air supplement structure is provided on the at least one-stage compression structure to achieve at least double air supplement to the compressor, which effectively expands the air supplement volume of the compressor, and enables more precise control of the supplement pressure ,
  • the air supplement method is diversified, thereby effectively improving the energy efficiency of the compressor and the scope of application of the compressor.
  • Figure 1 is a schematic structural diagram of some embodiments of the disclosed compressor.
  • the intermediate air supplement port is generally set on the intermediate pressure stage between the low pressure stage and the high pressure stage.
  • the supplement air pressure is slightly higher than the intermediate pressure, and the intermediate pressure increases with the suction and discharge process. The conditions change and change, and are affected by the two-stage pressure ratio.
  • the intermediate air supplement is not affected by the partial load. Although the air supplement volume can be increased, the air supplement pressure fluctuates greatly and the system is difficult to control.
  • the air supply port of the spool valve is generally set on the body, and the air flow enters the compression cavity formed by the female rotor and the male rotor cogging through the hole provided on the spool valve.
  • the air supplement pressure is generally the second cogging pressure, which is slightly higher than the suction pressure.
  • the supplementary air pressure is only affected by the suction pressure, and the control is relatively stable. However, under partial load, due to the bypass effect, the efficiency of air supplementation is reduced. When the load is too low, air supplementation cannot be achieved and energy efficiency cannot be improved.
  • the embodiment of the present disclosure provides a compressor.
  • the compressor includes a two-stage compression structure 1 and an intermediate air supplement structure 2.
  • the two-stage compression structure 1 has a row of the one-stage compression structure 1
  • a communication pipeline is provided between the air port and the suction port of another compression structure 1
  • the intermediate air supplement structure 2 is directly or indirectly connected with the communication pipeline
  • at least the first-stage compression structure 1 is provided with an air supplement structure, which uses
  • the air supply structure and the intermediate air supplement structure 2 realize at least double air supplement process, effectively increase the air supplement of the compressor, and compared with the related technology with only the intermediate air supplement structure 2, multiple air supplement structures can influence each other ,
  • the compression structure 1 includes a rotor cavity, the rotor cavity is provided with a rotor cavity air supplement port 11, and the rotor cavity air supplement port 11 forms an air supplement structure.
  • the rotor cavity air supplement port 11 is used in the compression structure 1 Perform air supplement when operating at full load.
  • the compression structure 1 further includes a spool valve.
  • the spool valve is provided with a spool valve cavity air supplement port 12, and the spool valve cavity air supplement port 12 and the rotor cavity air supplement port 11 together form an air supplement structure.
  • the supplementary pressure at the supplementary port 12 of the slide valve cavity in the same supplementary structure is equal to the supplementary pressure of the supplementary port 11 of the rotor cavity, so that the supplementary port 12 of the slide valve cavity and the supplementary port 11 of the rotor cavity work together to realize the Compression structure 1 uses a variety of air supplement methods to increase air supplement.
  • the spool valve is a volume spool valve, and the spool valve cavity air supply port 12 and the rotor cavity air supply port 11 have the same working state, that is, when air is supplied, the spool valve cavity air supply port 12 is used. Compensate air synchronously with the air supply port 11 of the rotor cavity.
  • the spool valve is an internal volume ratio adjustment spool valve.
  • the spool valve cavity air supplement port 12 and the rotor cavity air supplement port 11 work relatively independently. Since there is no partial load, the rotor can be used alone at this time Cavity supplementary air port 11.
  • a plurality of communicating holes are provided on the circumferential side of the rotor cavity, and all communicating holes are arranged along the spiral direction of the rotor in the rotor cavity.
  • the two-stage compression structure 1 includes a low-pressure stage body 3 and a high-pressure stage body 4.
  • the low-pressure stage body 3 is provided with a low-pressure stage air supplement structure
  • the high-pressure stage body 4 is provided with a high-pressure stage
  • the suction pressure of the low-pressure stage body 3 is lower than that of the low-pressure stage supplementary structure
  • the supplementary pressure of the intermediate supplementary structure 2 is lower than the suction pressure of the high-pressure stage body 4 is smaller than that of the high-pressure stage supplementary structure. Air pressure.
  • the low-pressure stage body 3 includes an exhaust cavity, the exhaust cavity is provided with a low-pressure exhaust port, the intermediate air supplement structure 2 is in communication with the exhaust cavity, and the air outlet of the intermediate air supplement pipeline The direction points to the low-pressure exhaust port.
  • the low-temperature refrigerant can simultaneously cool the primary exhaust, reduce the superheat of the primary exhaust, and improve energy efficiency.
  • the compressor further includes a detection module, which detects and adjusts the supplementary gas pressure of the supplementary gas structure; in some embodiments, the detection module detects and adjusts the supplementary gas pressure of the intermediate supplementary gas pipeline; in some embodiments , The detection module detects and adjusts the air supplement pressure of the air supplement structure and the air supplement pressure of the intermediate air supplement pipeline.
  • the supplementary pressure set at different positions is affected by various factors. The low-pressure stage supplementary gas affects the intermediate supplementary pressure, which in turn affects the high-pressure supplementary pressure, and the high-pressure supplementary pressure affects the exhaust pressure. This has an impact on the intermediate pressure.
  • the monitoring points can be set on the air supply pipeline of the rotor air supply chamber,
  • the valve cavity leads to the air supply pipe or the intermediate air supply pipeline, and uses an external sensor to realize the detection process, and the detection module adjusts the low-pressure supplementary gas pressure, the intermediate supplementary gas pressure and the high-pressure supplementary gas pressure to increase the compression according to the detected results.
  • the air supplement accuracy of the compressor or the detection module uploads the test results to the corresponding module in the system, and the corresponding module adjusts the low-pressure stage supplementary pressure, the intermediate stage supplementary pressure and the high-pressure stage supplementary pressure to increase the compressor's supplementary accuracy .
  • the capacity of the two-stage compression structure 1 is equal, and different capacity matching relationships are achieved through air supplementation, so as to meet multiple cooling requirements, broaden the compressor operating range and applicable environment, and improve versatility and compatibility.
  • Some embodiments of the present disclosure provide an air conditioning system including the aforementioned compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种压缩机及空调系统，压缩机包括两级压缩结构(1)和中间补气结构(2)，两级压缩结构(1)中的一级压缩结构(1)的排气口与另一压缩结构(1)的吸气口之间设置有连通管路，中间补气结构(2)直接或间接与连通管路连通，且至少一级压缩结构(1)上设置有补气结构。该压缩机及空调系统，在至少一级压缩结构(1)上设置补气结构，实现对压缩机的至少两重补气，有效的扩展了压缩机的补气量，而且能够使补气压力控制更加精确，补气方式多样化，从而有效的提高压缩机的能效和压缩机的适用范围。

Description

压缩机和空调系统
本公开是以CN申请号为201910690146.6，申请日为2019年7月29日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本公开中。
技术领域
本公开涉及空调设备技术领域，特别涉及一种压缩机和空调系统。
背景技术
螺杆压缩机为了提高能效，会在压缩机上设置补气装置，用于提高制冷量，提升整体能效。在发明人所知晓的相关技术中，通常采用的方式是在滑阀上开设补气口，通过滑阀将增加的制冷剂引入转子压缩腔，采用此种方式时，由于受到滑阀腔容积限制，补气量相对较少，一般在10％左右。单机双级螺杆压缩机由于采用两组转子的结构，可以在一级排气与二级吸气之间设置补气，由于壳体空间大，补气量可以提升至20％以上。但一般只在低压级或中间壳体设置补气口，补气压力难以控制。
发明内容
经发明人研究发现，相关技术中，压缩机尚存在补气量小且压力难以控制的技术缺陷。
有鉴于此，本公开实施例提供一种压缩机和空调系统，能够增加补气量且方便控制补气压力。
本公开的一些实施例提供了一种压缩机，包括：
两级压缩结构；和
中间补气结构；
其中，两级压缩结构中的一级压缩结构的排气口与另一压缩结构的吸气口之间设置有连通管路，中间补气结构直接或间接与连通管路连通，且至少一级压缩结构上设置有补气结构。
在一些实施例中，压缩结构包括转子腔，转子腔上设置有转子腔补气口，且转子腔补气口形成补气结构。
在一些实施例中，压缩结构还包括滑阀，滑阀上设置有滑阀腔补气口，滑阀腔补 气口和转子腔补气口共同形成补气结构，且同一补气结构内的滑阀腔补气口处的补气压力和转子腔补气口的补气压力相等。
在一些实施例中，滑阀为容量滑阀，滑阀腔补气口和转子腔补气口的工作状态相同。
在一些实施例中，滑阀为内容积比调节滑阀，滑阀腔补气口与转子腔补气口相对独立工作。
在一些实施例中，转子腔的周侧设置有多个连通孔，所有连通孔沿转子腔内的转子螺旋方向排列。
在一些实施例中，两级压缩结构包括低压级机体和高压级机体，低压级机体上设置有低压级补气结构，高压级机体上设置有高压级补气结构，且低压级机体的吸气压力小于低压级补气结构的补气压力小于中间补气结构的补气压力小于高压级机体的吸气压力小于高压级补气结构的补气压力。
在一些实施例中，低压级机体包括排气腔，排气腔上设置有低压排气口，中间补气结构与排气腔连通，且中间补气管路的出气方向指向低压排气口。
在一些实施例中，压缩机还包括检测模块，检测模块检测并调节补气结构的补气压力。
在一些实施例中，压缩机还包括检测模块，检测模块检测并调节中间补气管路的补气压力。
在一些实施例中，压缩机还包括检测模块，检测模块检测并调节补气结构的补气压力和中间补气管路的补气压力。
在一些实施例中，两级压缩结构的容量相等。
本公开的一些实施例提供了一种空调系统，包括前述压缩机。
因此，根据本公开实施例，在至少一级压缩结构上设置补气结构，实现对压缩机的至少两重补气，有效地扩展了压缩机的补气量，而且能够使补气压力控制更加精确，补气方式多样化，从而有效地提高了压缩机的能效和压缩机的适用范围。
附图说明
图1为本公开压缩机的一些实施例的结构示意图。
附图标记说明
1、压缩结构；2、中间补气结构；11、转子腔补气口；12、滑阀腔补气口；3、低压级机体；4、高压级机体。
具体实施方式
为了使本公开的目的、技术方案及优点更加清楚明白，以下结合附图及实施例对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅用于解释本公开，并不用于限定本公开。
对于单机双级压缩机的中间补气结构，中间补气口一般设置在低压级与高压级之间的中压级上，补气压力为略高于中间压力，而中间压力随着吸排气工况变化而变化，且受到两级压比的影响。中间补气不受部分负荷影响，虽补气量可增加，但补气压力波动较大，系统难以控制。滑阀补气口一般设置在机体上，气流经过设置在滑阀上的孔进入阴转子与阳转子齿槽形成的压缩腔，补气压力一般为第二齿槽压力，略高于吸气压力，补气压力只受吸气压力影响，控制比较稳定。但在部分负荷时，由于旁通影响，补气效率降低，负荷过低时，则无法补气，无法提升能效。
为此，本公开的实施例提供了一种压缩机，如图1所示，压缩机包括两级压缩结构1和中间补气结构2，两级压缩结构1中的一级压缩结构1的排气口与另一压缩结构1的吸气口之间设置有连通管路，中间补气结构2直接或间接与连通管路连通，且至少一级压缩结构1上设置有补气结构，利用补气结构和中间补气结构2，实现至少两重补气过程，有效地增加压缩机的补气量，而且相比于相关技术中仅具有中间补气结构2而言，多重补气结构能够相互影响，从而有效地扩展了压缩机的补气量，而且能够使补气压力控制更加精确，补气方式多样化，从而有效地提高压缩机的能效和压缩机的适用范围。
在一些实施例中，如图1所示，压缩结构1包括转子腔，转子腔上设置有转子腔补气口11，且转子腔补气口11形成补气结构，利用转子腔补气口11在压缩结构1处于满负荷运行时进行补气。
如图1所示，在一些实施例中，压缩结构1还包括滑阀，滑阀上设置有滑阀腔补气口12，滑阀腔补气口12和转子腔补气口11共同形成补气结构，且同一补气结构内的滑阀腔补气口12处的补气压力和转子腔补气口11的补气压力相等，使滑阀腔补气口12和转子腔补气口11相互配合工作，实现对一个压缩结构1采用多种补气方式补气，增加补气量。
在一些实施例中，如图1所示，滑阀为容量滑阀，滑阀腔补气口12和转子腔补气口11的工作状态相同，也即在补气时，采用滑阀腔补气口12和转子腔补气口11同步补气。
如图1所示，在一些实施例中，滑阀为内容积比调节滑阀，滑阀腔补气口12与转子腔补气口11相对独立工作，由于不存在部分负荷，此时可以单独使用转子腔补气口11。
在一些实施例中，转子腔的周侧设置有多个连通孔，所有连通孔沿转子腔内的转子螺旋方向排列。
如图1所示，在一些实施例中，两级压缩结构1包括低压级机体3和高压级机体4，低压级机体3上设置有低压级补气结构，高压级机体4上设置有高压级补气结构，且低压级机体3的吸气压力小于低压级补气结构的补气压力小于中间补气结构2的补气压力小于高压级机体4的吸气压力小于高压级补气结构的补气压力。
在一些实施例中，如图1所示，低压级机体3包括排气腔，排气腔上设置有低压排气口，中间补气结构2与排气腔连通，且中间补气管路的出气方向指向低压排气口，随着吸排气工况波动，低温制冷剂可同时起到冷却一级排气的作用，降低一级排气过热度，提高能效。
在一些实施例中，压缩机还包括检测模块，检测模块检测并调节补气结构的补气压力；在一些实施例中，检测模块检测并调节中间补气管路的补气压力；在一些实施例中，检测模块检测并调节补气结构的补气压力和中间补气管路的补气压力。开设在不同位置的补气压力，受到多方综合影响，低压级补气影响到中间补气压力，中间补气压力又对高压级补气压力产生影响，高压级补气压力影响到排气压力，从而有对中间压力产生影响。通过设置合适的监测点，监测不同位置压力变化，可以找到每个工况的最优压力分布，使压缩机运行达到最佳能效状态，其中监测点可以开设在转子补气腔补气管路上、滑阀腔引出补气管上或中间补气管路上，并利用外接传感器实现检测过程，而且检测模块根据其检测到的结果调节低压级补气压力、中间级补气压力和高压级补气压力从而增加压缩机的补气精度或者检测模块将检测结果上传至系统内的对应模块，并由对应模块调节调节低压级补气压力、中间级补气压力和高压级补气压力从而增加压缩机的补气精度。
在一些实施例中，两级压缩结构1的容量相等，通过补气实现不同的容量匹配关系，从而可以满足多种冷量需求，拓宽压缩机运行范围及适用环境，提高通用性与兼 容性。
本公开的一些实施例提供了一种空调系统，包括前述压缩机。
以上所述实施例仅表达了本公开的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本公开专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本公开构思的前提下，还可以做出若干变形和改进，这些都属于本公开的保护范围。因此，本公开的保护范围应以所附权利要求为准。

Claims (13)

  1. 一种压缩机，包括：
    两级压缩结构(1)；和
    中间补气结构(2)；
    其中，两级所述压缩结构(1)中的一级所述压缩结构(1)的排气口与另一所述压缩结构(1)的吸气口之间设置有连通管路，所述中间补气结构(2)直接或间接与所述连通管路连通，且至少一级所述压缩结构(1)上设置有补气结构。
  2. 根据权利要求1所述的压缩机，其中，所述压缩结构(1)包括转子腔，所述转子腔上设置有转子腔补气口(11)，且所述转子腔补气口(11)形成所述补气结构。
  3. 根据权利要求2所述的压缩机，其中，所述压缩结构(1)还包括滑阀，所述滑阀上设置有滑阀腔补气口(12)，所述滑阀腔补气口(12)和所述转子腔补气口(11)共同形成所述补气结构，且同一所述补气结构内的所述滑阀腔补气口(12)处的补气压力和所述转子腔补气口(11)的补气压力相等。
  4. 根据权利要求3所述的压缩机，其中，所述滑阀为容量滑阀，所述滑阀腔补气口(12)和所述转子腔补气口(11)的工作状态相同。
  5. 根据权利要求3所述的压缩机，其中，所述滑阀为内容积比调节滑阀，所述滑阀腔补气口(12)与所述转子腔补气口(11)相对独立工作。
  6. 根据权利要求2所述的压缩机，其中，所述转子腔的周侧设置有多个连通孔，所有所述连通孔沿所述转子腔内的转子螺旋方向排列。
  7. 根据权利要求1所述的压缩机，其中，两级所述压缩结构(1)包括低压级机体(3)和高压级机体(4)，所述低压级机体(3)上设置有低压级补气结构，所述 高压级机体(4)上设置有高压级补气结构，且所述低压级机体(3)的吸气压力小于所述低压级补气结构的补气压力小于所述中间补气结构(2)的补气压力小于所述高压级机体(4)的吸气压力小于所述高压级补气结构的补气压力。
  8. 根据权利要求7所述的压缩机，其中，所述低压级机体(3)包括排气腔，所述排气腔上设置有低压排气口，所述中间补气结构(2)与所述排气腔连通，且所述中间补气管路的出气方向指向所述低压排气口。
  9. 根据权利要求1所述的压缩机，其中，所述压缩机还包括检测模块，所述检测模块检测并调节所述补气结构的补气压力。
  10. 根据权利要求1所述的压缩机，其中，所述压缩机还包括检测模块，所述检测模块检测并调节所述中间补气管路的补气压力。
  11. 根据权利要求1所述的压缩机，其中，所述压缩机还包括检测模块，所述检测模块检测并调节所述补气结构的补气压力和所述中间补气管路的补气压力。
  12. 根据权利要求1所述的压缩机，其中，两级所述压缩结构(1)的容量相等。
  13. 一种空调系统，包括权利要求1～12任一项所述的压缩机。
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